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pelopium
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See also:
pélopium
and
Pelopium
English
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English
Wikipedia
has an article on:
pelopium
Wikipedia
Etymology
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Pelops
+
-ium
Noun
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pelopium
(
uncountable
)
(
obsolete
)
A supposed
chemical element
, later found to be a mixture of
niobium
and
tantalum
.